Investigators are now trying to determine if a likely heroin overdose in Wake County could have involved fentanyl, which is a drug often used to cut heroin.

The details of the case came from a search warrant made public at the Justice Center Wednesday. It was filed by investigators at the Wake County Sheriff's Department who are still asking questions.

The heroin overdose, according to the search warrant, happened last weekend. The warrant says it all started at a home in the 6500 block of Mal Weathers Road in southern Wake County where a resident told investigators his friend had snorted heroin.

On Sunday morning, the friend wasn't responding so he was taken to the Johnston County Medical Center and pronounced dead.

The fatal overdose comes in the same week when two Fayetteville women were sickened by what police called heroin laced with fentanyl. It also comes after a warning from the state about a drug called "China Ice" which is also laced with fentanyl.

Wake County's sheriff says his investigators are awaiting autopsy results to see if fentanyl is involved in the death here. In the meantime, he hopes that death serves as a warning.

"These sellers, they'll cut it, they'll put stuff in it just to make a dollar," said Harrison. They could care less because they know it's hard to pin it back to them because a lot of times it goes from hand to hand to hand and nobody can really go back and say, 'Well, this guy did this, and this guy did that.' If we have an overdose case, just like we're working now, we'll do everything we can to find, see if we can find who was supplying that drug."

By the time the sheriff's department gets results from the autopsy, however, that trail could be cold.